<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>测试</title>
    <style>
        body{
            background: url("img/bg.png");
        }
        .center{
            background: white;
            width: 50%;
            margin: auto;
            border-radius: 15px;
            margin-top: 100px;
        }
        table{
            width: 100%;
            text-align: center;
        }
        table label{
            font-size: 20px;
        }
        table input{
            width: 70%;
            height: 40px;
            border-radius: 5px;
            outline: none;
            border: 1px solid black;
        }
        table th{
            font-size: 30px;
            color: orangered;
        }
        ty{
            line-height: 60px;
        }
        button{
            width: 90%;
            height: 40px;
            background: crimson;
            outline: none;
            border: 1px solid crimson;
            border-radius: 5px;
            color: white;
            font-size: 20px;
            cursor: pointer;
        }
        </style>
</head>
<body>
<div>

    <img src="img/btn_login.png" height="58" width="406"/></div>
<div class="center">
<form >
    <table>
        <tr>
            <th colspan="2">账&nbsp;密&nbsp;登&nbsp;录<hr></th>
            <tr/>
        <tr>
            <td><label for="username">账号</label></td>
            <td><input id="username" type="text" name="username" placeholder="请输入账号"></td>
        </tr>
        <tr>
            <td><label for="password">密码</label></td>
            <td><input type="password" id="password" name="password" placeholder="请输入密码"></td>
        </tr>
        <tr>
            <td colspan="2">
                <button>确&nbsp;&nbsp;定</button>
            </td>
        </tr>

    </table>
</form>
</div>
</body>
</html>